CAJ | 학술논문

为探明冬小麦补偿效应对保水剂用量的响应，采用盆栽试验，研究了轻度胁迫和充分供水条件下，保水剂不同用量（0、27、54、81 mg/kg ）对复水前后小麦叶片和根系生理特征及产量的影响。结果表明：在拔节期，复水前，两水分条件下叶片细胞质膜透性均随保水剂用量的增加呈先降低后增加趋势，且均显著低于对照（0 mg/kg处理），根系活力在轻度胁迫条件下表现为显著提高趋势，在充分供水条件下则先增后降再增；复水后，两水分条件下均以81 mg/kg处理的细胞质膜透性最低，且根系活力最强。在灌浆期，轻度胁迫条件下，复水前、后均以81 mg/kg处理的叶片质膜透性最高，且显著高于对照；而充分供水条件下复水前、后各处理间的叶片质膜透性差异均不显著。复水后，在轻度胁迫条件下根系活力以27 mg/kg处理最高，而充分灌水条件下以54 mg/kg处理的效果最佳。最终，小麦产量和水分利用效率以充分供水条件下较对照增幅最大，且以54 mg/kg处理效果最佳，较对照增产9．3％，水分利用效率提高9.0％。而轻度胁迫条件下以27 mg/kg处理效果最佳，小麦产量和水分利用效率均较对照提高6．9％。
위탐명동소맥보상효응대보수제용량적향응，채용분재시험，연구료경도협박화충분공수조건하，보수제불동용량（0、27、54、81 mg/kg ）대복수전후소맥협편화근계생리특정급산량적영향。결과표명：재발절기，복수전，량수분조건하협편세포질막투성균수보수제용량적증가정선강저후증가추세，차균현저저우대조（0 mg/kg처리），근계활력재경도협박조건하표현위현저제고추세，재충분공수조건하칙선증후강재증；복수후，량수분조건하균이81 mg/kg처리적세포질막투성최저，차근계활력최강。재관장기，경도협박조건하，복수전、후균이81 mg/kg처리적협편질막투성최고，차현저고우대조；이충분공수조건하복수전、후각처리간적협편질막투성차이균불현저。복수후，재경도협박조건하근계활력이27 mg/kg처리최고，이충분관수조건하이54 mg/kg처리적효과최가。최종，소맥산량화수분이용효솔이충분공수조건하교대조증폭최대，차이54 mg/kg처리효과최가，교대조증산9．3％，수분이용효솔제고9.0％。이경도협박조건하이27 mg/kg처리효과최가，소맥산량화수분이용효솔균교대조제고6．9％。
In order to ascertain the response of compensation effect of the winter w heat to differ-ent rates of water-retaining agent (0 mg/kg ,27 mg/kg ,54 mg/kg ,and 81 mg/kg) ,the pot experi-ment was employed to study the effect of water-retaining agent on the wheat leaf ,root physiologi-cal characteristics and yield under the drought stress and efficient irrigation conditions .T he re-sults indicated that at jointing stage ,leaf plasma membrane permeability dropped firstly ,and then increased with the increase of water-retaining agent before rewatering under the two moisture conditions ,which were lower than those of the control .In the drought stress condition ,root vigor increased significantly with the increase of water-retaining agent ,while it first increased ,then dropped and increased again under the sufficient irrigation condition .After rewatering in the drought stress and efficient irrigation conditions ,the treatment with 81 mg/kg of water-retaining agent had the lowest cytoplasm membrane permeability and the strongest root vigor compared with the control .To filling stage ,the leaf plasma membrane permeability of the treatment with 81 mg/kg of water-retaining agent was significantly higher than that of the control before and after rewatering under the drought stress condition ,while there was no significant difference among the treatments under the efficient irrigation condition .Under drought stress condition ,the treatment with 27 mg/kg of water-retaining agent had the highest root vigor compared with the other treat-ments after rewatering ,while the treatment with 54 mg/kg of water-retaining agent brought about the best effect under efficient irrigation condition .The wheat yield and water use efficiency of the water-retaining agent treatments under the efficient irrigation condition had higher increase than those under the drought stress condition ,in which the treatment with 54 mg/kg of water-retaining agent performed the best effects ,with yield and water utilization effeciency increasing by 9 .3% and 9 .0% ,respectively ,compared to the control .However ,the treatment with 27 mg/kg of water-retaining agent performed the best effects under drought stress ,and its yield and water uti-lization effeciency both increased by 6 .9% compared with the control .